API Audio 1608 Recording Console - Manual (Page 10)

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2.0 548B Channel Module
The 548B Channel module provides a single audio path for bringing signals into
the console for mixing and/or routing to external destinations. Together with the
440B Fader, it provides a comprehensive audio path for a variety of applications:
 Microphone/instrument/line preamplifier
 Equalizer
 High-pass filter
 Balanced insert
 Eight (8) Echo/Auxiliary Sends
 Fully featured mute and solo section
 Pan-pot
 Direct Output
 Program and Summing Bus assignments
All eight echo/aux sends can be routed either pre or post-fader. Echo/aux Sends
7/8 can be routed to feed the Summing Buses.
The basic signal flow through the 548B Channel module is as follows:
input preamplifier -> equalizer -> insert -> fader/mute -> output
routing